<template>
    <div class="dropdown-list-mpicker-container">
        <i-select
            v-if="!hasChildren"
            class="dropdown-list-mpicker"
            multiple
            :transfer="true"
            transfer-class-name="dropdown-list-mpicker-transfer"
            v-model="currentVal"
            :disabled="disabled"
            :clearable="true"
            :filterable="filterable"
            @on-open-change="onClick"
            :placeholder="$t('components.dropDownListMpicker.placeholder')"
        >
            <i-option v-for="(item, index) in items" :key="index" :value="item.value ? item.value.toString() : ''" :label="item.text">
                <el-checkbox :value="currentVal.indexOf(item.value ? item.value.toString(): '') == -1 ? false : true" :disabled="true">
                    {{ Object.is(codelistType, 'STATIC') ? $t('codelist.' + tag + '.' + item.value) : item.text }}
                </el-checkbox>
            </i-option>
        </i-select>
        <ibiz-select-tree
            v-if="hasChildren"
            class="tree-dropdown-list-mpicker"
            :disabled="disabled"
            :NodesData="items"
            v-model="currentVal"
            :multiple="true"
        ></ibiz-select-tree>
    </div>
</template>

<script lang="ts">
import { Vue, Component, Prop, Model } from 'vue-property-decorator';
import CodeListService from '@service/app/codelist-service';
import { Util } from '@/utils';

@Component({})
export default class DropDownListMpicker extends Vue {
    /**
     * 代码表服务对象
     *
     * @type {CodeListService}
     * @memberof DropDownListMpicker
     */
    public codeListService: CodeListService = new CodeListService({ $store: this.$store });

    /**
     * 是否有子集
     * @type {boolean}
     * @memberof DropDownListMpicker
     */
    public hasChildren: boolean = false;

    /**
     * 当前选中值
     * @type {any}
     * @memberof DropDownListMpicker
     */
    @Model('change') readonly itemValue!: any;

    /**
     * 代码表标识
     *
     * @type {string}
     * @memberof DropDownListMpicker
     */
    @Prop() public tag?: string;

    /**
     * 代码表类型
     *
     * @type {string}
     * @memberof DropDownListMpicker
     */
    @Prop() public codelistType?: string;

    /**
     * 代码表值分隔符
     *
     * @type {string}
     * @memberof DropDownListMpicker
     */
    @Prop({ default: ',' }) public valueSeparator?: string;

    /**
     * 是否禁用
     * @type {any}
     * @memberof DropDownListMpicker
     *
     */
    @Prop() public disabled?: any;

    /**
     * 是否支持过滤
     * @type {boolean}
     * @memberof DropDownListMpicker
     */
    public filterable: boolean = true;

    /**
     * 下拉选提示内容
     * @type {string}
     * @memberof DropDownListMpicker
     */
    @Prop() public placeholder?: string;

    /**
     * 局部上下文导航参数
     *
     * @type {any}
     * @memberof DropDownListMpicker
     */
    @Prop() public localContext!: any;

    /**
     * 局部导航参数
     *
     * @type {any}
     * @memberof DropDownListMpicker
     */
    @Prop() public localParam!: any;

    /**
     * 视图上下文
     *
     * @type {*}
     * @memberof DropDownListMpicker
     */
    @Prop() public context!: any;

    /**
     * 视图参数
     *
     * @type {*}
     * @memberof DropDownListMpicker
     */
    @Prop() public viewparams!: any;

    /**
     * 传入表单数据
     *
     * @type {*}
     * @memberof DropDownListMpicker
     */
    @Prop() public data?: any;

    /**
     * 计算属性(当前值)
     * @type {any}
     * @memberof DropDownListMpicker
     */
    set currentVal(val: any) {
        if (this.hasChildren && val) {
            let tempVal: any = JSON.parse(val);
            if (tempVal.length > 0) {
                val = tempVal.map((item: any) => {
                    return item.value;
                });
            }
        }
        const type: string = this.$util.typeOf(val);
        val = Object.is(type, 'null') || Object.is(type, 'undefined') ? [] : val;
        let value = val.length > 0 ? val.join(this.valueSeparator) : '';
        this.$emit('change', value);
    }

    /**
     * 获取值对象
     *
     * @memberof DropDownListMpicker
     */
    get currentVal() {
        if (this.hasChildren) {
            if (this.itemValue) {
                let list: Array<any> = [];
                let selectedvalueArray: Array<any> = [];
                let curSelectedValue: Array<any> = this.itemValue.split(this.valueSeparator);
                this.getItemList(list, this.items);
                if (curSelectedValue.length > 0) {
                    curSelectedValue.forEach((selectedVal: any) => {
                        let tempResult: any = list.find((item: any) => {
                            return item.value == selectedVal;
                        });
                        selectedvalueArray.push(tempResult);
                    });
                }
                return selectedvalueArray.length > 0 ? JSON.stringify(selectedvalueArray) : null;
            } else {
                return null;
            }
        }
        return this.itemValue ? this.itemValue.split(this.valueSeparator) : [];
    }

    /**
     * 代码表
     *
     * @type {any[]}
     * @memberof DropDownListMpicker
     */
    public items: any[] = [];

    /**
     * 获取代码表列表
     *
     * @memberof DropDownListMpicker
     */
    public getItemList(list: Array<any>, items: Array<any>) {
        if (items && items.length > 0) {
            items.forEach((item: any) => {
                if (item.children) {
                    this.getItemList(list, item.children);
                }
                list.push(item);
            });
        }
    }

    /**
     * 公共参数处理
     *
     * @param {*} arg
     * @returns
     * @memberof DropDownList
     */
    public handlePublicParams(arg: any) {
        // 合并表单参数
        arg.param = this.viewparams ? JSON.parse(JSON.stringify(this.viewparams)) : {};
        arg.context = this.context ? JSON.parse(JSON.stringify(this.context)) : {};
        // 附加参数处理
        if (this.localContext && Object.keys(this.localContext).length > 0) {
            let _context = this.$util.computedNavData(this.data, arg.context, arg.param, this.localContext);
            Object.assign(arg.context, _context);
        }
        if (this.localParam && Object.keys(this.localParam).length > 0) {
            let _param = this.$util.computedNavData(this.data, arg.param, arg.param, this.localParam);
            Object.assign(arg.param, _param);
        }
    }

    /**
     * vue  生命周期
     *
     * @memberof DropDownListMpicker
     */
    public created() {
        if (this.tag && Object.is(this.codelistType, 'STATIC')) {
            const codelist = this.$store.getters.getCodeList(this.tag);
            if (codelist) {
                this.items = [...JSON.parse(JSON.stringify(codelist.items))];
                this.handleLevelCodeList(Util.deepCopy(this.items));
            } else {
                console.log(`----${this.tag}----${this.$t('app.commonWords.codeNotExist') as string}`);
            }
        } else if (this.tag && Object.is(this.codelistType, 'DYNAMIC')) {
            // 公共参数处理
            let data: any = {};
            this.handlePublicParams(data);
            // 参数处理
            let _context = data.context;
            let _param = data.param;
            this.codeListService
                .getItems(this.tag, _context, _param)
                .then((res: any) => {
                    this.items = res;
                    this.handleLevelCodeList(Util.deepCopy(this.items));
                })
                .catch((error: any) => {
                    console.log(`----${this.tag}----${this.$t('app.commonWords.codeNotExist') as string}`);
                });
        }
    }

    /**
     * 下拉点击事件
     *
     * @param {*} $event
     * @memberof DropDownListMpicker
     */
    public onClick($event: any) {
        if (this.tag && Object.is(this.codelistType, 'DYNAMIC')) {
            // 公共参数处理
            let data: any = {};
            this.handlePublicParams(data);
            // 参数处理
            let _context = data.context;
            let _param = data.param;
            this.codeListService
                .getItems(this.tag, _context, _param)
                .then((res: any) => {
                    this.items = res;
                    this.handleLevelCodeList(Util.deepCopy(this.items));
                })
                .catch((error: any) => {
                    console.log(`----${this.tag}----${this.$t('app.commonWords.codeNotExist') as string}`);
                });
        }
    }

    /**
     * 处理层级代码表
     *
     * @param {*} items
     * @memberof DropDownListMpicker
     */
    public handleLevelCodeList(items: Array<any>) {
        if (items && items.length > 0) {
            this.hasChildren = items.some((item: any) => {
                return item.pvalue;
            });
            if (this.hasChildren) {
                let list: Array<any> = [];
                items.forEach((codeItem: any) => {
                    if (!codeItem.pvalue) {
                        let valueField: string = codeItem.value;
                        this.setChildCodeItems(valueField, items, codeItem);
                        list.push(codeItem);
                    }
                });
                this.items = list;
            }
        }
    }

    /**
     * 计算子类代码表
     *
     * @param {*} items
     * @memberof DropDownListMpicker
     */
    public setChildCodeItems(pValue: string, result: Array<any>, codeItem: any) {
        result.forEach((item: any) => {
            if (item.pvalue == pValue) {
                let valueField: string = item.value;
                this.setChildCodeItems(valueField, result, item);
                if (!codeItem.children) {
                    codeItem.children = [];
                }
                codeItem.children.push(item);
            }
        });
    }
}
</script>

<style lang="less">
@import './dropdown-list-mpicker.less';
</style>
